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Black coaxial cable with PL-259 connectors, 50 ft length

BFKK

BFKK KMR 400 PL-259 UHF Coaxial RF Cable 50 ft

SKU CH-ZTBE-4472E

50 ft KMR 400 coaxial cable with PL-259 connectors, swept for VSWR under 1.35 and 0.26 dB loss at 500 MHz

  • Length50 ft.

Length 50 ft.

  • Ultra-low loss cable with only 0.26 dB attenuation at 500 MHz per 3 ft
  • 60 % less signal loss than RG-58 at Wi-Fi frequencies
  • Factory-swept to guarantee VSWR below 1.35 for reliable transmission
  • Heavy-duty PL-259 clamp connectors prevent accidental disconnection
  • UV-proof jacket rated for 20-year outdoor exposure with adhesive-lined 2.2 in heat-shrink seals

50 ft KMR 400 Coaxial Cable

This 50 ft KMR 400 coaxial cable uses PL-259 UHF male connectors for CB, ham and VHF marine radio installations. It is built for 50 ohm systems and suits antenna analysers, dummy loads and SWR meters. The jacket is UV-proof RF-PVC rated for 20-year outdoor exposure.

Upgrade from RG-58 for lower loss

At 500 MHz the cable attenuates only 0.26 dB over 3 ft, giving roughly 60 % less loss than RG-58 at Wi-Fi frequencies. Swept testing guarantees VSWR below 1.35, so the jump is worth it when feed-line loss degrades receive sensitivity or transmit efficiency. The heavy clamp-style PL-259 connectors resist pull-out better than crimp types.

Sealed ends simplify weatherproof installs

Each connector is sealed with a 2.2 in adhesive-lined heat-shrink tube that bonds the jacket to the UHF connector. High-density tinned copper braid provides 100 % shielding, while the copper-clad aluminium conductor keeps the assembly flexible. The nickel-plated RF Industries connectors lock securely, freeing the installer from periodic re-tightening.

Highlights

  • Ultra-low loss cable with only 0.26 dB attenuation at 500 MHz per 3 ft
  • 60 % less signal loss than RG-58 at Wi-Fi frequencies
  • Factory-swept to guarantee VSWR below 1.35 for reliable transmission
  • Heavy-duty PL-259 clamp connectors prevent accidental disconnection
  • UV-proof jacket rated for 20-year outdoor exposure with adhesive-lined 2.2 in heat-shrink seals

Specifications

Length50 ft.

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Questions about this item

What connectors does the 50 ft KMR 400 cable use for mounting?

It is fitted with PL-259 UHF male connectors on both ends, each secured with a heavy mount clamp rather than a crimp fitting.

How do you attach the PL-259 connectors, and what mistake should be avoided?

The connectors are professionally assembled with a clamp mechanism; do not attempt to crimp them, as the design relies on the heavy mount clamp for a secure, waterproof joint.

What long-term protection does the cable have, and when might the seal need attention?

Adhesive-lined heat-shrink tubing 2.2 in long seals each connector junction, and the UV-proof RF-PVC jacket is rated for 20-year outdoor exposure; inspect the seals if the jacket shows cracking.

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